Nonlinear Diffusion Equations and Curvature Conditions in Metric Measure Spaces
Luigi Ambrosio author Giuseppe Savare author Andrea Mondino author
Format:Paperback
Publisher:American Mathematical Society
Published:30th Mar '20
Currently unavailable, and unfortunately no date known when it will be back
The aim of this paper is to provide new characterizations of the curvature dimension condition in the context of metric measure spaces $(X,\mathsf d,\mathfrak m)$.
On the geometric side, the authors' new approach takes into account suitable weighted action functionals which provide the natural modulus of $K$-convexity when one investigates the convexity properties of $N$-dimensional entropies. On the side of diffusion semigroups and evolution variational inequalities, the authors' new approach uses the nonlinear diffusion semigroup induced by the $N$-dimensional entropy, in place of the heat flow.
Under suitable assumptions (most notably the quadraticity of Cheeger's energy relative to the metric measure structure) both approaches are shown to be equivalent to the strong $\mathrm {CD}^{*}(K,N)$ condition of Bacher-Sturm.
ISBN: 9781470439132
Dimensions: unknown
Weight: 250g
121 pages